Telegraphic receiving organism.



I. KITS EE. TELEGRAPHIU RECEIVING ORGANISM.

APPLIGATION TILED FEBJQ, 1908. RENEWED JAN. 13, 1914.

' 2 sums-SHEET 1.

. Cad/e 2Q Cable.

WITNESSES; 11v VEN TOR;

KITSEE. 'TELEGRAPHIC RECEIVING ORGANISM. v

\ APPLICATION TILED FEB-14, 1908.

RENEWED 53.11.13, 1914.

4 Patented A101". 7, 1914;

2 SHEETS-SHEET 2.

WITNESSES INVENTORV.

To all whom it may concern ,IsInoR KITSEE, or riiinannnriirn; rnnixis nvama, assrenon, BY .AND

MESNE ASSIGNMENTS, roAMEmoAN TELEPHONE AND TELEGRAPH COMPANY, or

NEW YORK, n. Y., aeoiaeofnarronor NEW'YORK. c I

rnfnneaarnro nncnfvine ORGANISM;

Specification of Letters Patent.

Applicationxfiled February l l, 1908, Serial No. 415,893. Renewed'Ja'nuary 13, 1914. Serial No. 811,905.

Be it known that I, Isnion Klrsnn, a citizen of the United States, residing at Phila- "the arrangement as will hereinafter be de scribed, lllustrated 1n the accompanying ,"delphia, in the county of Philadelphia and State of ,Pennsylvania, have invented oer-- tain new/ and useful Improvements in Tele-f graphic ,Recciving following is a specification.

Organisms, of which the My invention relates to an improvement in'telegraphy and has more special reference to the receiving organism of lines withgreat capacity, such as submarine cables.

To persons versed in the'art, it is well known that the electro-motive force of the, impulse impressed upon the cable has to be} limited and so also the duration 0 impulses l impressed thereon, and it was found that the best results are obtained in cable telegraphy through the impressing of true reversals, that is, of impulses always'of practically the same duration and. intensity but alternatelyof opposite polarity. I have found that it is possible to telegraph over such lines as for instance submarine cables with the aidof astraight or direct current, making use of clearing impulses after the signal inipulse.

The arrangement as outlined in this specification is applicable to different modesof receiving, but its great advantage is apparent in a system whereby the impulses are transmitted with the aid of a transmitting tape and are made to select required types, etc. at the receiving station so as to print the messages automatically. More specially is this arrangement designed to apply to such printing systems wherein a different group of signals is transmitted over the line and each different grouping is made to actuate a different type bar. In this system, the spaces between words,"etc., by a grouping of signals, which instead of actuating a type bar actuates a blank bar. Such system is well known and is in prac-' tical use in the United States and elsewhere under the name of the Barclay printer.

For this purpose, my invention consists of drawing,'-andmore particularly pointed out in the claims following thisspecification.

In the'drawing, Figure -1 is a partial perspective and partial diagrammatic-view of I a receiving organism embodyingrny mven are also denoted tion. Fig. 2; represents a plan'viewof a transmitting tape. Fig. 3 isa plan view of part of a cable and the two sources of current inserted therein. I In this -drawing,1 represents a relay asan entirety. 'The type of relay may difienaccording' to requirements but I have foun that the type wherein, a suspended indvable coil is positioned in a stationary magnetic field is best adapted for the purpose inquestion and I have, therefore, illustrated in this Patented an a, 19ft.

drawing a relay of such type, and L have designated the coil by the numeral 42 and the stationary magnetic field ,by the numeral 43. The relaying contacts are shown here to comprise the stationary contact "5 and the movable contact 2. This movable 0011-, tact'is here held in suspension by the conducting thread 3 adapted tov be actuated by the means 4 through the movement of the coil. This suspension of the movable' conductor I have found moresensitive than the pivoting of same in the usual manner and, therefore, I have made use of it inthis my invention. I r

The localized circuit comprises the battery 6 which is normally short circuited through the-Wires 7 and 8 and the contact points above referred to. To this battery is also connected, with the aid of the Wires ,9 and 10, the coil of electro-ma'gnet 11. The contacts 2 and 5 are also connected to each other through the resistance 16.

Careful experiments have proven to me that the arrangement as here'describ'ed' is most etficient in preventing the sparking or sticking of sensitive relaying devices.

The mode of operation of this arrangement is as follows :',Normally, the two contacts 2 and 5 are electrically connected with each other. The. battery 6 is, therefore, short circuited and no current will flow through the circuit including the coil of electromagnet 11, but as soon as these con-.

tacts' are bro-ken, the current will flow through said C0111 will energize the electromagnet, and operate the armature thereof.

The resistance 16 should be of a value higher than the resistance of the coil of 11, and in practice I have found that if the coil of such electromagnet has a resistance of about five hundred ohms, the value of resistance 16 should at least be twenty five hundred ohms. In this arrangemenhthe type Qfbattery has Y to be taken into consideration, as not every type will stand a short circuit for a long period and I have made use of what is technically known as the gravity cell. The electromagnet 11 is provided with the armature 12 and the forward stops 14am 15.

The armature is normally held by the spring .13 in contact with 15.

relay is connected through the terminals 17 and 18 with the cable.

. 19 is a source of current here shown as a sistance 20 is connected in shunt tothe coil 42 of the relay proper through the wires 24 and 25. One of these wires, here shown as wire 25, includes the variable resistance 26. The function of this shunt circuit and the resistance thereto is as f01lows:--The cur rent from the battery 19,. if the circuit of same is closed, should have an effect on the coil opposite from the effect of the impulse adapted to open the connection between the contacts'2 and 5, and as it is necessary to limit the flow of this current through the coil, I have made use of the arrangement as just described. The resistance 20 should be very low and'it is best to arrange the resistance so that the same maybe varied from one to five ohms, as I have found that this variation. is sufficient inpractical working. The resistance 26 should be ofhigh value and should be arranged so that the'ohmic value of same may be varied from ten thousand to fifty thousand ohms. Certainly, the

greater the number of cells comprising the battery 19, the smaller hasto'be-the resist-. ance 20 and the greater the "IBSlStaIICBQGQ The operator will, after a short practice,

easily ascertain the necessary value of these two resistances.

As stated above, the primary 21 of the inductorium 30 is connected in the circuit including the source 19;.the secondary 27 of this inductorium is connected to a'polarized device 31. This device is provided with the armature 32 and the forward stops 33 and 34. The armature 32 and the forward stop -34 are provided with means 35 and 36 so as to connect the same to a necessary circuit.

The transmitting tape 50 is provided with the perforations 51 and 52 for the purpose of transmitting impulses and the spaces between the different perforations denote the character to be transmitted. One row of the perforations is designed to allow the transmission of a positive impulse and the second row of perforations is designed to allow the transmission of a'negative impulse over the line. In this drawing, I have illustrated the tape as to be providedwith a series of per- The'coil 42 of the.

forations denoting the arbitrary grouping v of signals supposedly to-r'epr'esentpne .o the letters of thealphabet and I have marked on said tape the character demoted-by ."said grouping.

Normally, the battery is, as stated above,

' normally against the stop 15 held thereby the spring 13. Normally also'thearmature 32- of the device 31 rests against the stop 33. s

It is supposed that the impulseson the first or row 51 of the tape 50 permits the trans mission over the cable of a positive impulse and that this impulse moves 'at the receiving station'the coil 42 in a direction so 'as to" break the contact between 2 and 5.. Through the breaking of this contact,the 'shortci'rcuit' around the battery 6 is also-broken andthe force from said battery will energize thecOilf of electro-magnet 11 thereby drawing."the'.

pletion of this circuit will result in the'following :First, a slight current will flow through the shunt circuit including the coilp.

42 and it is supposed that the-flowofthis current will actuatethe coil in a manner so that through the movement of same, the cons tacts 2 and 5 will again be brought together and thebatt'ery 6 will again be short circuited. Second, the'flow from the battery .19, .through the primary. 21, will induce an impulse in the secondary 27 and it is-supposed that this impulse will draw thearmature 3.2 into contact with the stop 33, or ifthe armature rests against this stop, will make the contact therewith moreclosely. When, now, through the opposite movement of the coil 42, the contacts 2. and- 5 are again brought together, the battery (Swill again be short circuited, the electro-magnet 11 again be deenergized, the armature 12 will again fall away from the stop 14 and will come in opposite direction and .this impulsewill to rest at, 15. The breaking of this circuit, "that is, the ceasing of the flow of the'current through the primary 21, will again induce an impulse in the secondary 27 but this time positely from the first movement and th'e armature will break the contactwith 33 and will come to rest at 34'. In this position, the armature 32 will remain until an impulseonly required to varyth'e space betweenone pair of impulses and the second. In this.

system,-the second or negative impulse. of

each impulse-pair s only required forth'' purposeof clearmg the cable, audit the cable is always connected to a small source-of current, opposite from the current-impulse. to be transmitted, then only a positive im-' pulse needs to be sent over the line. I

This system of transmission is clearly in; dicated' in Fig. '3, which illustrates a cable,-

two sources of current inserted in said "cable, and automatic means, such as a perforated tape, to shunt one of said sources. In this figure, and 61 are the two sources of cur.- rent; 62 and 63 are the means to short cir; cuit one cell through the perforations of the tape. u

In the system as outlined, the armature 32: of the device 31, will-at the end of a mes sage-come to rest at the point 34 andit is.

necessary to remove, at the end of such mes sage, the armature from the point 3 i'and bring the same in contact with 33.

Usually, a group of impulses is sent over the line to notify the receiving operator-that the message is atan end. This group of signals can be made to actuate a local de-. vice in a manner, so that the same will force .the armature 32 awayfrom the point 34 and toward and in contact with the stop 33.

Having now described my invention, what I lclaim asnew and desire to secure by Lettrs Patent is In telegraphy, means to receive and i I translate impulses transmitted, said means comprising a relay, relaying contacts therefor-';j-;a-;.localized circuit including anelectronragiifet. adapted to be operated through said relayin' contacts, a circuit adapted to be" operate through said electro-magnet, an

vinductorium and a polarized relay, the primary of said inductorium connected to the -55 tosaid polarized relay. "2; In telegraphy, a therein, relaying ized circuit adapted to be operated throughlast named circuit; the secondary connected line, a relay inserted contacts therefor, a localsaid relaying contacts, an electro-magnet in said'circuit, a second circuit, said second circuit adapted to be operated through said electro-magnet, an inductorium and a polar-- relay, the primary of the inductorium con-- nected in the second circuit and the second-v ary of said inductorium connected to said olar-relay 3. In a relaying organism, a linerelay, a

localized circuit .adapted to" 'be operated through said relay, a second circuit, an inin the first named circuit to operate the sec- 0nd named circuit, said circuit embracing ductorium and a polarized relay, and means the primary of said inductorium,-' the second ary connectedfto the polarizedrelay 4. In aftelegraphic relaying organism," a

line v relay, .a local c rcuit operatively .relat'ed to said line relay, a second circuit operatively. related tosaid first, circuit, said second-zcircuit providedwith variable means toallow electric energy, in 'a' predetermined degree,

(to flow'thro ugh the coil of the line-relay, an. -inductorium and apolar-relay, both opera- Y 'tively related to said second circuit.

- 51 A receiving device for telegraphic said coil, the movable contact ad-a 8-5 1 I naling impulses comprising a movable co1l ,'a rstationary contact and amovablecontact for.

ted to be.)

actuated through the movements 0 "said coil, a "an electric circuit connecting both of said contacts with each other, an'electromag'net' in shunt with'said electric circuit, a second electric circuit, *a converte'r'or inductorium for'said second circuit, the primary ,of said inductorium inclosed msard second circuit,

said second circuit adapted to, ;be%-operatedthrough said electromagnet,air-translating 'relay said translating relay connected to the secondary of said converter or inductorium.

5; In -telegraphy,, a relaying organismcomprising the line relay,'two localized circuits,- one of said circuits adapted to' be o erated'through'the line relay and provnd'ed with electro-magnetic means, the second of said. circuits adapted to be operated throughv said electro-magnetic means, said second circuit provided with means tocause part of itselectric energy to-fiow through the coil of the line relay, an inductorium, the primary connected in said circuit, a polarized relay; the'secondary of said inductorium connected to 'said relay.'

- -7. In. combination'with a telegraphic reno I lay adapted to operate in onedirection=,

through the 4 incoming: impulse; localizedmeans tocausethe operation of said relay in an opposite directionfand localized in-' ductive means adapted to be' operated through said first named means, said inductive means adapted to operate necessary translating device.

8. A relaying magnetic means adapted -to be operatedthrough said line relay, electric means adapted to be operated through saidelectro magnetic means, said electricineansadapted t0 influence the relay in opposition to the;

organism for cable telegraphy comprisingaaline relay and electroinfluence through the incoming impulse in combination with a translating device, a

ing organism, said means comprising a transnntting line, the receiver inserted in said line, relaying contacts therefor, a local clrcuit m operatlve relatlon to sa1d contacts,

an electro-magnet in said circuit, a second circuit operatively related to the elect-r0 magnet and coil of the receiver, respectiv'el ani'iiductorium, the primary related to sald second circuit, a polar-relay, said polarl5 relay related to the secondary of said inductor1um.' r

In testimony whereof I afiix my signature in presence of two witnesses.

ISIDOR KITSEE. Witnesses:

'M'ARY C. SMITH,

EDITH B. STILLEY. 

